Why energy efficiency matters more than ever

With UK gas and electricity prices remaining high, keeping heat inside your home has never been more important. Older windows are one of the biggest causes of heat loss, forcing heating systems to work harder and pushing energy bills up year after year.

According to UK energy efficiency studies, up to 18 percent of heat loss in a typical home can occur through windows, particularly where single glazing or early double glazing is still in place.

How double glazing reduces heat loss

Older glazing allows heat to escape quickly through the glass and frame.

Modern double glazing works by:

Using two panes of glass instead of one
Trapping insulating gas between the panes
Applying low-emissivity (Low-E) coatings that reflect heat back into the room

Together, these features dramatically reduce heat loss compared to older window systems.

What is argon-filled double glazing?

Argon is a colourless, non-toxic gas that is denser than air. When used between the panes of double glazing, it:

Slows heat transfer
Improves insulation without increasing window thickness
Helps modern units achieve higher energy ratings

Most high-quality double-glazed units supplied in the UK today are argon-filled as standard.

How much money can it save you in the UK?

Savings vary depending on the age and condition of your existing windows, but replacing inefficient glazing can lead to meaningful reductions in heating costs.

UK energy estimates suggest:

Homes replacing single glazing can save several hundred pounds per year on heating
Homes replacing older double glazing still see noticeable savings due to improved glass coatings and gas-filled units

Beyond direct savings, homes also benefit from more stable indoor temperatures, meaning heating systems cycle less frequently.

Improved comfort all year round

Energy-efficient glazing offers more than lower bills:

Warmer rooms in winter
Reduced draughts near windows
Less condensation
Improved sound insulation

This makes homes easier to heat and more comfortable throughout the year.

Is it worth upgrading?

Upgrading is usually worthwhile if your windows are:

Single glazed
Over 15–20 years old
Showing condensation between panes
Letting in noticeable draughts

Modern argon-filled double glazing is one of the most effective upgrades you can make without major disruption.

A practical upgrade for today’s energy prices

With energy costs unlikely to return to previous lows, improving insulation is a sensible long-term decision. Energy-efficient double glazing helps protect your home from rising bills while improving everyday comfort.

Thinking about upgrading your windows?

A quick survey allows us to assess your existing windows and recommend energy-efficient double-glazed units that suit your home, budget, and priorities.

Get in touch to find out how much you could save by upgrading your windows.